The Legend of the Shark Goddess: A Nanea Mystery (American Girl Mysteries)

Ever since the war started, Nanea's done her best to follow all the new rules. When she meets a boy named Mano in her grandparents' market, Nanea is shocked to hear him admit to breaking some rules. And when things start to go missing from the market, Mano is the first person Nanea suspects. Nanea's determined to protect her grandparents, but Mano, whose name means "shark," seems to be hanging around the market more and more. What can Nanea do to keep her family safe from this dangerous boy?